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WM8904ECS/R Datenblatt(PDF) 16 Page - Wolfson Microelectronics plc

Teilenummer WM8904ECS/R
Bauteilbeschribung  Ultra Low Power CODEC for Portable Audio Applications
PDF  188 Pages
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Hersteller  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8904ECS/R Datenblatt(HTML) 16 Page - Wolfson Microelectronics plc

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WM8904
Pre-Production
w
PP, Rev 3.3, September 2012
16
OUTPUT SIGNAL PATH
High Performance Stereo Playback to Headphones - DAC input to HPOUTL+HPOUTR pins with 15
 load
Test conditions:
HPOUTL_VOL = HPOUTR_VOL = 111001b (0dB)
Low Power Playback mode disabled. (See Table 49 for details; note that Low Power Playback mode is disabled by default.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output Power (per Channel)
Po
1% THD
RLoad= 30
28
0.92
-0.76
mW
Vrms
dBV
1% THD
RLoad= 15
32
0.69
-3.19
mW
Vrms
dBV
DC Offset
DC servo enabled,
calibration complete.
-1.5
+1.5
mV
Signal to Noise Ratio
SNR
A-weighted
90
96
dB
Total Harmonic Distortion + Noise
THD+N
RL=30; Po=2mW
-91
dB
RL=30; Po=20mW
-84
RL=15; Po=2mW
-87
-80
RL=15; Po=20mW
-85
Channel Separation
1kHz signal, 0dBFS
100
dB
10kHz signal, 0dBFS
90
Channel Level Matching
1kHz signal, 0dBFS
+/-1
dB
Power Supply Rejection Ratio
PSRR
217Hz, 100mVpk-pk
75
dB
1kHz, 100mV pk-pk
70
Low Power Stereo Playback to Headphones - DAC input to HPOUTL+HPOUTR pins with 15
 load
Test conditions:
HPOUTL_VOL = HPOUTR_VOL = 111001b (0dB)
Low Power Playback Mode enabled (see Table 48 for details)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output Power (per Channel)
Po
1% THD
RLoad= 30
27
0.90
-0.92
mW
Vrms
dBV
1% THD
RLoad= 15
30
0.67
-3.5
mW
Vrms
dBV
Signal to Noise Ratio
SNR
A-weighted
95
dB
Total Harmonic Distortion + Noise
THD+N
RL=30; Po=2mW
-91
dB
RL=30; Po=20mW
-83
RL=15; Po=2mW
-87
RL=15; Po=20mW
-80



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